/Engine/Source/Runtime/Engine/Public/Curves/CurveEvaluation.h
Assuming that P0, P1, P2 and P3 are sequential control points of an N=4 Bezier curve, returns the interpolated value for interpolation constant Alpha in [0, 1]
namespace UE { namespace Curves { template<typename CurveValueType> CurveValueType UE::Curves::BezierInterp ( CurveValueType P0, CurveValueType P1, CurveValueType P2, CurveValueType P3, float Alpha ) } }